Regularly scheduled chats are at 11 p.m. ET on Saturday nights on the Undernet group called #Dark_Shadows.
Or try the DS Undernet channel #Collinwood the first Saturday of the month at 10 pm ET.
I recommend that you use Turbo Pirch3 Click "Download" in the left hand column.
Or take your chances with one of these "telnet" sites. Just keep hitting "Return" or "Enter" until you are promted for a "Nickname". Choose one that you think is unique. Then keep hitting "Return" or "Enter" until you reach a page with messages scrolling up the screen. Then type "/join #Dark_Shadows" (without the quotes).